While surfing. If you want to know what I was looking at just refer to this poem. I found someone who had participated in the Tumblr accent challenge (also referred to as accent tag). I found it fascinating.
People from all over the English Speaking world say words in their own accent. It is amazingly cool as a source of material for writing accents.
Let me show you a few examples that I found. Enjoy! Comment.
British / Greek